SE511146C2 - Method of salt casting - Google Patents

Method of salt casting

Info

Publication number
SE511146C2
SE511146C2 SE9704846A SE9704846A SE511146C2 SE 511146 C2 SE511146 C2 SE 511146C2 SE 9704846 A SE9704846 A SE 9704846A SE 9704846 A SE9704846 A SE 9704846A SE 511146 C2 SE511146 C2 SE 511146C2
Authority
SE
Sweden
Prior art keywords
salt
bag
pipe
phase change
band
Prior art date
Application number
SE9704846A
Other languages
Swedish (sv)
Other versions
SE9704846L (en
SE9704846D0 (en
Inventor
Jan Boerje Eriksson
Original Assignee
Jan Boerje Eriksson
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Jan Boerje Eriksson filed Critical Jan Boerje Eriksson
Priority to SE9704846A priority Critical patent/SE511146C2/en
Publication of SE9704846D0 publication Critical patent/SE9704846D0/en
Priority to AU23035/99A priority patent/AU2303599A/en
Priority to PCT/SE1998/002201 priority patent/WO1999032571A1/en
Priority to EP98966439A priority patent/EP1042424A1/en
Publication of SE9704846L publication Critical patent/SE9704846L/en
Publication of SE511146C2 publication Critical patent/SE511146C2/en

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09KMATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K5/00Heat-transfer, heat-exchange or heat-storage materials, e.g. refrigerants; Materials for the production of heat or cold by chemical reactions other than by combustion
    • C09K5/02Materials undergoing a change of physical state when used
    • C09K5/06Materials undergoing a change of physical state when used the change of state being from liquid to solid or vice versa
    • C09K5/063Materials absorbing or liberating heat during crystallisation; Heat storage materials

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Combustion & Propulsion (AREA)
  • Thermal Sciences (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Seasonings (AREA)
  • Thermotherapy And Cooling Therapy Devices (AREA)
  • Packages (AREA)

Abstract

The present invention concerns a method for casting salt energy storing rods. The method is characterized by the fact that a pipe (1) fitted with a flange is enclosed in a bag/cover (3) salt-tight placed in a divided plastic cast mould (5), which is designed to absorb pressure from crystal growth at a change of phases, at which salt in a melted state is filled in around the pipe and into the bag, after which the body thus received is exposed to a lower temperature for a certain period of time, enabling a change of phases from a liquid to a solid state in the salt.

Description

511 146 2 Den delade formen innebär expansionsmöjligheter vid fasväxlingen. 511 146 2 The divided form means expansion possibilities at the phase shift.

Vid ett föredraget alternativ anordnas kring flänsarna i det flänsförsedda röret ett perforerat band, vilket tillsammans med det flänsförsedda röret placeras i den mot salt tätande päsen, vilket band är anordnat att uttaga tryck fràn kristalltillväxt vid fasväxling flytande -fast.In a preferred alternative, arrangements are made around the flanges in the flanged tube a perforated band, which together with the flanged pipe is placed in it against salt sealing peg, which band is arranged to take off pressure from crystal growth during phase change liquid -solid.

Vid ett ytterligare utföringsalternativ användes formar av polystyren, och den använda pàsen kan lämpligen bestå av polyeten, tät för salt i smält form. Bandet, som lindats kring det flänsförsedda röret kan lämpligen vara perforerat till cirka 50 % för fyllning av salt i smält form och för att åstadkomma diffusion till och fràn salt, dehydrerat eller hydrerat.In a further embodiment, molds of polystyrene, and the bag used may suitably consist of polyethylene, tight for salt in molten form. The band, which is wrapped around the flanged tube may conveniently be perforated to about 50% for filling salt in molten form and for cause diffusion to and from salt, dehydrated or hydrated.

Detta band upptager tryck fràn kristalltillväxt vid fasväxling flytande - fast och kan tillàta viss expansion.This band absorbs pressure from crystal growth at phase shift fluid - solid and may allow some expansion.

Saltet i de färdiga stavarna kan vid användning exempelvis uttorkas med solfångare under den varma àrstiden, och sedan kan värmen uttagas pá vintern genom att vattnet fàr àtergà till saltet. Man kan även utnyttja spillvärme fràn industrien för torkningen = värmeupplagringen.The salt in the finished rods can be used, for example dried with solar panels during the hot season, and then the heat can be removed in the winter by allowing the water to return to the salt. You can also use waste heat from industry for drying = heat storage.

Allt det metalliska materialet, som användes vid metoden, bör vara stàl.All the metallic material used in the method should be steel.

Efter torkningen, som sker medelst transport/genomflöde av hett vatten, sker förpackning av de erhållna stavarna i en tank, vilket underlättar deras följande användning, där de sammanbygges med flera tankar/energidimensionerat antal. ß 511 146 Ritning: Uppfinningen är exemplifierad i bifogad ritning.After drying, which takes place by means of transport / flow of hot water, packaging of the obtained rods takes place in a tank, which facilitates their subsequent use, where they combined with several tanks / energy-dimensioned number. ß 511 146 Drawing: The invention is exemplified in the accompanying drawing.

Utföringsexempel: Kring ett med konvektorflänsar (4) försett konvektorrör (1) placeras ett band (6), vilket är perforerat till cirka 50 %.Exemplary embodiments: Convector tubes (1) fitted with convector flanges (4) a band (6) is placed, which is perforated to about 50%.

Detta band tillàter viss expansion vid kristallväxten i saltet vid fasövergangen. Det är avsett för fyllning av salt i smält form och för att åstadkomma diffusion till och frán saltet, dehydrerat eller hydrerat. Upptill är anordnad en pàfyllningstratt (7) av plast. Kring det flänsförsedda röret med dess omgivande band anordnas en pàse av polyeten, tät för salt i smält form (3). Denna är nertill tätad mot röret vid (2). Den sà erhàllna kroppen placeras i en delad form (5) av polystyren, vilken tillåter expansion av gjutkroppen vid fasväxling till fast form för saltet (natriumsulfid).This band allows some expansion at the crystal growth in the salt at the phase transition. It is intended for filling with salt in molten form and to effect diffusion to and from the salt, dehydrated or hydrated. At the top is arranged one plastic filling funnel (7). Around the flanged pipe with its surrounding band a polyethylene bag is arranged, tight for salt in molten form (3). This is sealed at the bottom against the pipe at (2). The body thus obtained is placed in a divided shape (5) of polystyrene, which allows expansion of the casting body at phase change to solid form of the salt (sodium sulphide).

I det av pàsen tillslutna utrymmet ifylles vid (7) salt i smält form och vid den efterföljande fasväxlingen tillàter formen (5) och även bandet (6) expansion.In the space enclosed by the bag, fill with (7) salt in molten form and at the subsequent phase change allows the mold (5) and also the band (6) expansion.

Temperaturen för det smälta saltet kan vid ifyllandet vara +40/50 grader och fasväxlingen kan ske i rumstemperatur +20 grader under viss tid.The temperature of the molten salt may be at the time of filling +40/50 degrees and the phase change can take place at room temperature +20 degrees for some time.

Uppfinningen kan varieras pá màngahanda sätt inom ramen för nedanstående patentkrav.The invention can be varied in many ways within the scope for the following claims.

Claims (1)

4 511146 BAIEHIKBAL l.Metod för saltgjutning av energilagringsstavar, kännetecknad därav, att ett flänsförsett rör (1) inneslutes i en påse/hölje (3) av salttätande slag och placeras i en delad plastgjutform (5), avsedd för upptagande av tryck fràn kristalltillväxt vid fasväxling, varvid salt i smält form ifylles kring röret och i påsen, varefter den så erhållna kroppen under viss tid utsättes för en lägre temperatur, möjliggörande fasväxling fràn flytande till fast form för saltet, samt att kring flänsarna (4) i det flänsförsedda röret anordnas ett perforerat band (6), vilket tillsammans med det flänsförsedda röret placeras i den mot salt tätande påsen (3), vilket band är anordnat att uttaga tryck fràn kristalltillväxt vid fasväxling flytande - fast. 2.Metod enligt patentkrav l, kännetecknad därav, att bandet (6) är perforerat till cirka 50 % för fyllning av salt i smält form och för att åstadkomma diffusion till och från salt, dehydrerat eller hydrerat. 3.Metod enligt något av föregående patentkrav, kännetecknad därav, att saltet utgöres av natriumsulfid (Na S). 24 511146 BAIEHIKBAL 1. Method for salt casting of energy storage rods, characterized in that a flanged tube (1) is enclosed in a bag / casing (3) of salt-sealing type and placed in a divided plastic mold (5), intended for absorbing pressure from crystal growth during phase change, whereby salt in molten form is filled around the pipe and in the bag, after which the body thus obtained is exposed to a lower temperature for a certain time, enabling phase change from liquid to solid form for the salt, and around the flanges (4) in the flanged pipe a perforated band (6) is arranged, which together with the flanged tube is placed in the salt-sealing bag (3), which band is arranged to take pressure from crystal growth during phase change liquid - solid. Method according to claim 1, characterized in that the strip (6) is perforated to about 50% for filling salt in molten form and for effecting diffusion to and from salt, dehydrated or hydrated. Method according to one of the preceding claims, characterized in that the salt consists of sodium sulphide (Na S). 2
SE9704846A 1997-12-23 1997-12-23 Method of salt casting SE511146C2 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
SE9704846A SE511146C2 (en) 1997-12-23 1997-12-23 Method of salt casting
AU23035/99A AU2303599A (en) 1997-12-23 1998-12-02 Method for salt casting
PCT/SE1998/002201 WO1999032571A1 (en) 1997-12-23 1998-12-02 Method for salt casting
EP98966439A EP1042424A1 (en) 1997-12-23 1998-12-02 Method for salt casting

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE9704846A SE511146C2 (en) 1997-12-23 1997-12-23 Method of salt casting

Publications (3)

Publication Number Publication Date
SE9704846D0 SE9704846D0 (en) 1997-12-23
SE9704846L SE9704846L (en) 1999-06-24
SE511146C2 true SE511146C2 (en) 1999-08-09

Family

ID=20409548

Family Applications (1)

Application Number Title Priority Date Filing Date
SE9704846A SE511146C2 (en) 1997-12-23 1997-12-23 Method of salt casting

Country Status (4)

Country Link
EP (1) EP1042424A1 (en)
AU (1) AU2303599A (en)
SE (1) SE511146C2 (en)
WO (1) WO1999032571A1 (en)

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2846988A1 (en) * 1978-10-28 1980-05-08 Philips Patentverwaltung WARM OR COOL STORAGE
NZ229745A (en) * 1988-07-02 1992-06-25 Uni Charm Corp Cooling pack; liquid-permeable container encloses coolant carrier

Also Published As

Publication number Publication date
WO1999032571A1 (en) 1999-07-01
SE9704846L (en) 1999-06-24
SE9704846D0 (en) 1997-12-23
AU2303599A (en) 1999-07-12
EP1042424A1 (en) 2000-10-11

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